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1 6(1): (2012) DOI: /jfscom Journal of FisheriesSciences.com E-ISSN X RESEARCH ARTICLE ARAŞTIRMA MAKALESİ THE FISH FAUNA OF THE SEYHAN DAM LAKE (ADANA) Sibel Alagöz Ergüden, M. Ziya Lugal Göksu Cukurova University, Faculty of Fisheries, Department of Basic Science, Balcali, Adana-Turkey Abstract: This study was carried out between March 2004 and February 2005, to determine the fish species inhabited in Seyhan Dam Lake. Totally 804 specimens were caught by different methods. It was determined that specimens caught were belonging to 23 species and 9 families (Salmonidae, Cyprinidae, Cobitidae, Siluridae, Clariidae, Cyprinodontidae, Poecilidae, Percidae, and Blennidae) were identified. The results revealed that Oncorhynchus mykiss (Walbaum, 1792), Carassius carassius (Linnaeus, 1758), Carassius gibelio (Bloch, 1783), Acanthobrama sp., Alburnus sp., Squalius kottelati Turan, Yilmaz & Kaya, 2009, Luciobarbus pectoralis (Heckel, 1843), Capoeta angorae (Hanko, 1925), Capoeta erhani Turan, Kottelat & Ekmekçi, 2008, Cobitis evreni Erk'akan, Özeren & Nalbant, 2008, Aphanius fasciatus (Valenciennes, 1821) and Aphanius mento (Heckel, 1843) are new records for Seyhan Dam Lake. Keywords: Seyhan Dam Lake, Fish species, Taxonomy, Ichthyofauna Özet: Seyhan Baraj Gölü (Adana) Balık Faunası Çalışma, Seyhan Baraj Gölü'nde yaşayan balık türlerini belirlemek için Mart 2004 ile Şubat 2005 tarihleri arasında gerçekleştirilmiştir. Farklı avcılık yöntemlerinin uygulandığı çalışmada toplam 804 adet balık yakalanmıştır. Yakalanan örneklerin 23 tür ve 9 familyaya (Salmonidae, Cyprinidae, Cobitidae, Siluridae, Clariidae, Cyprinodontidae, Poecilidae, Percidae, Blennidae) mensup oldukları tespit edilmiştir. Bu çalışmada tespit edilen türlerden, Oncorhynchus mykiss (Walbaum, 1792), Carassius carassius (Linnaeus, 1758), Carassius gibelio (Bloch, 1783), Acanthobrama sp., Alburnus sp., Squalius kottelati Turan, Yilmaz & Kaya, 2009, Luciobarbus pectoralis (Heckel, 1843), Capoeta angorae (Hanko, 1925), Capoeta erhani Turan, Kottelat & Ekmekçi, 2008, Cobitis evreni Erk'akan, Özeren & Nalbant, 2008, Aphanius fasciatus (Valenciennes, 1821) ve Aphanius mento (Heckel, 1843) Seyhan Baraj Gölü için yeni kayıttır. Anahtar Kelimeler: Seyhan Baraj Gölü, Balık türleri, Taksonomi, İhtiyofauna Correspondence to: Sibel (Alagöz) ERGÜDEN, Cukurova University, Faculty of Fisheries, Department of Basic Science Balcali, Adana-TÜRKİYE Tel: ( ) Fax: ( ) alagozs@cu.edu.tr 39

2 Introduction Total area surface of Turkey s Lakes is 9200 km 2. Turkey has approximetly 200 natural lakes, 679 pool and 114 dam lakes. In a study made in Turkey, 22 wetlands were present according to Ramsar agreement of fish criteria. Sixteen of these wetlands are natural lakes and two of them are river basins (Kucuk and Ikiz, 2004). There are many studies, carried out by Turkish and foreign researchers, on the fresh water fish fauna of Turkey. The first study on freshwater fish fauna of Turkey was carried out by Abbolt in 1835 (Geldiay and Balik, 1996). Following studies were predominantly on taxonomy and ecology of fish in the different regions of Turkey Kosswig (1939), Battalgil (1941), Sozer (1941), Kosswig and Battalgil (1943), Numann (1958), Ladiges (1960), Balik (1988), Kalkan and Erdemli (1994), Geldiay and Balik (1996), Ozulug (1999), Altun (1999), Erk akan et al. (1999), Kuru (2004), Ugurlu and Polat (2007) and Kara et al. (2010). Seyhan Dam Lake is one of the most important freshwater reservoirs for fisheries production in the southern Anatolia region. To date, several fisheries studies; Sarihan and Toral (1973), Sarihan (1974), Sarihan and Kumova (1984), Ozyurt and Avsar (2002), Alagoz (2005), Alagoz et al. (2006), Erguden Alagoz et al. (2008a), Erguden Alagoz and Erguden (2008b), Erguden Alagoz and Goksu (2009, 2010) were reported in Seyhan Dam Lake which was built on Seyhan River. Commercial fisheries in the Seyhan Dam Lake started in the early 70 s just after transplantation of pike-perch, Sander lucioperca (Linnaeus, 1758) (1971 and 1973), (DSI, 1984). Later, Common carp, Cyprinus carpio Linnaeus, 1758 transplantation was also carried out between 1976 and 1980 by DSI (1985). However, pikeperch population destroyed small fish carp population and unbalanced cyprinid fish stock unusal changing in the lake. Similarly, Ozyurt and Avsar (2002) indicated that pikeperch especially feed on small carp fish and young roach, Rutilus rutilus (Linnaeus, 1758). Thus, they can change species balance in the Seyhan Dam Lake. By being the most productive inland water reservoir in terms of usefullness of fish resources, Seyhan Dam Lake provides economical benefits to the Cukurova region and people who lives there. The dispersion of inoculated carp and pikeperch had a considerable effect on the dispersion of other fish species due to the provoking fact. Therefore, this study has been carried out to estimate relationship between current and previous studies in terms of fish population distribution. It was also aimed to determine the current composition of fish species in the dam lake. Materials and Methods Seyhan Dam Lake is in the boundaries of Adana (Figure 1) and an important inland water resorvoir in southeast Mediterranean. It was built on Seyhan River for irrigation, prevention of flood and electiricity in The lake is approximetly 4 km wide, 23 km long, and maximum 45 m deep in spring season and the area is maximum 9200 hectares. Altitude from sea is nearly 6 meters (Kirgiz, 1984). Fish samples were caught periodically every month from March 2004 to February A total of 804 individuals were collected using gill nets, scoop nets, trammel nets with various mesh sizes. While putting the samples in plastic containers, catching date, weather situation were noted and then the containers were labeled. Photographs of fish samples were taken in the study area and the laboratory 4-5% formaldehyde solution were used for the first fixation and then 70% alcohol was added for preservation. Morphometric measurements were carried out with a 0.1 mm digital caliper. Some meristic characteristics, such as rays in dorsal, ventral, anal and pectoral fins, caudal fins, gill rakers, lateral line, transversal scales and number of barbels, were determined. The samples were deposited at the Fisheries Faculty of the Çukurova University, Turkey. Identification of fish samples were used from Geldiay and Balik (1996), Erk akan et al. (1999), Banarescu and Boutskaya (2003), Kuru (2004), Erk akan et al. (2007, 2008), and Turan et al. (2006, 2008, 2009). 40

3 Figure 1. Seyhan Dam Lake is the study area. Results and Discussion A total of 23 species belonging to 22 genera and 9 families (Salmonidae, Cyprinidae, Cobitidae, Siluridae, Clariidae, Cyprinodontidae, Poecilidae, Percidae, Blennidae) were caught from Seyhan Dam Lake, which were listed in Table 1. The classifications of specimens were done according to Kuru (2004). Family: Salmonidae Oncorhynchus mykiss (Walbaum, 1792) Material examined: 10 September 2004, 1 specimens; 15 January 2005, 3 specimens. Diagnostic characteristics: TL: cm, D: III-IV 10-12, A: III-IV 8-12, P: I 12-13, V: II 8-9, C: 19. Lateral line scales: (Figure 2). Family: Cyprinidae Cyprinus carpio Linneaus, 1758 Material examined: 17 March 2004, 12 specimens; 18 April 2004, 2 specimens; 15 May 2004, 3 specimens; 15 June 2004, 10 specimens; 17 July 2004, 3 specimens;14 August 2004, 10 specimens; 10 Semptember 2004, 15 specimens; 15 October 2004, 6 specimens; 19 November 2004, 12 specimens; 16 December 2004, 1 specimens; 15 January 2005, 12 specimens; 17 February 2005, 10 specimens; 18 March 2005, 4 specimens. Figure 2. Oncorhynchus mykiss (Walbaum, 1792) Diagnostic characteristics: TL: cm, gill-rakers on the first branchial arch; D: III 17-21, A: III 5, P: I 13-14, V: II 6-8. Lateral line scales: (Figure 3a and 3b). 41

4 Carassius carassius (Linnaeus, 1758) Material examined: 16 December 2004, 2 specimens; 19 November 2004, 2 specimens. Diagnostic characteristics TL: cm, gill-rakers on the first branchial arch; D: III 20-21, A: III 5-6, P: I 16-17, V: II 7-8. Lateral line scales: 29-30, Transversal scales: 5-6. (Figure 4). Figure 3a. Cyprinus carpio Linnaeus, 1758 Figure 3b. Cyprinus carpio Linnaeus, 1758 Table 1. List of fish species and number from Seyhan Dam Lake. Figure 4. Carassius carassius (Linnaeus, 1758) Family Species Number Salmonidae Oncorhynchus mykiss (Walbaum, 1792)* 4 Cyprinidae Cyprinus carpio Linnaeus, Carassius carassius (Linnaeus, 1758)* 4 Carassius gibelio (Bloch, 1783)* 10 Acanthobrama sp.* 10 Alburnus sp.* 2 Squalius cephalus (Linnaeus, 1758) 4 Squalius kottelati Turan, Yilmaz & Kaya, 2009* 4 Garra rufa (Heckel, 1843) 4 Chondrostroma regium (Heckel, 1843)* 8 Luciobarbus pectoralis (Heckel, 1843)* 5 Rutilus rutilus (Linnaeus, 1758)* 150 Capoeta angorae (Hanko, 1925)* 10 Capoeta erhani Turan, Kottelat & Ekmekçi, 2008* 5 Tinca tinca (Linnaeus, 1758)* 52 Cobitidae Cobitis evreni Erk'akan, Özeren & Nalbant, 2008* 3 Siluridae Silurus glanis Linnaeus, Clariidae Clarias gariepinus (Burchell, 1822) 2 Cyprinodontidae Aphanius fasciatus (Valenciennes, 1821)* 53 Aphanius mento (Heckel, 1843) * 2 Poecilidae Gambusia affinis (Baird & Girard, 1853) 350 Percidae Sander lucioperca (Linnaeus, 1758) 10 Blennidae Salaria fluviatilis (Asso, 1801) 2 *Introduced species 42

5 Carassius gibelio (Bloch, 1783) Material examined: 15 October 2004, 5 specimens; 19 November 2004, 5 specimens. Diagnostic characteristics: TL: cm, gill-rakers on the first branchial arch; D: IV 15, A: III 6, V: II 6, P: I 13. Lateral line scales 30, Transversal scales: 7/6 (Figure 5a,b). Figure 6. Acanthobrama sp. Figure 5a. Carassius gibelio (Bloch, 1783) Figure 5b. Carassius gibelio (Bloch, 1783) Figure 7. Alburnus sp. Squalius cephalus (Linnaeus, 1758) Material examined: 18 April 2004, 2 specimens; 17 February 2005, 2 specimens. Diagnostic characteristics: TL: cm, 8 9 gill rakers on the first arch. D: II 9, A: II 8-9, P: I 14, V: I 8. Lateral line scales: 44-46, Transversal scales: 7/4 (Figure 8). Acanthobrama sp. Material examined: 18 April 2004, 7 specimens; 17 November 2005, 3 specimens Diagnostic characteristics: TL: cm, D: II 7-8, A: II 13-15, P: I 13, C: 25. Lateral line scales: 70-74, Transversal scales: 12-13/6-7 (Figure 6). Alburnus sp. Material examined: 15 October 2004; 2 specimens. Diagnostic characteristics: TL: cm, D: III 11, A: III 17. Lateral line scales: 64 (Figure 7). Figure 8. Squalis cephalus (Linnaeus, 1758) Squalius kottelati Turan, Yilmaz & Kaya, 2009 Material examined: 18 April 2004; 4 specimens. Diagnostic characteristics: TL: cm, D: III 8 9, A: II 9, P: I 16. Lateral line scales: 40 41, Transversal scales: 7 8/4 (Figure 9). 43

6 Figure 9. Squalis kottelati Turan, Yilmaz & Kaya, 2009 Garra rufa (Heckel, 1843) Material examined: 16 December 2004; 4 specimens. Diagnostic characteristics: TL: cm, D: III 8, A: III 4-5, P: I 14, V: I 7. Lateral line scales 34 35, Transversal scales:4/3 (Figure 10). Figure 11. Chondrostoma regium (Heckel, 1843) Figure 10. Garra rufa (Heckel, 1843) Chondrostoma regium (Heckel, 1843) Material examined: 14 August 2004, 3 specimens; 16 December 2004, 5 specimens. Diagnostic characteristics: TL: cm, D: III, 8-12, A: III, 10-11, P: I 15-16, V: I-II, 6-8. Lateral line scales: (Figure 11). Luciobarbus pectoralis (Heckel, 1843) Material examined: 17 February 2005, 5 specimens. D: II 7-8, A III 10-11, P: I 16-19, V: I-II, C: 26. Lateral line scales: 53, Line transversal: 10/7. Diagnostic characteristics: TL: cm, Lateral line scales: 45-48, gill rakers: (Figure 12). Figure 12. Luciobarbus pectoralis (Heckel, 1843) Rutilus rutilus (Linnaeus, 1758) Material examined: 17 March 2004, 4 specimens; 18 April 2004, 10 specimens; 15 May 2004, 8 specimens; 15 June 2004, 12 specimens; 17 July 2004, 8 specimens; 14 August 2004, 22 specimens; 10 Semptember 2004, 10 specimens; 15 October 2004, 3 specimens; 19 November 2004, 2 specimens; 16 December 2004, 11 specimens; 15 January 2005, 30 specimens; 17 February 2005, 14 specimens;18 March 2005, 16 specimens. Diagnostic characteristics: TL: cm, gill rakers on the first arch. D: III 9-10, A: II 7 8. Lateral line scales: 45-60, Transversal scales: 7 10/3 4 (Figure 13). Capoeta angorae (Hanko, 1925) Material examined: 17 March 2004, 2 specimens; 15 January 2005, 4 specimens; 17 February 2005, 4 specimens. Diagnostic characteristics: TL: cm, D II 8, A III 4-5, P: I 16-18, V: I-II, C: Lateral line scales: 67, Transversal scales: 15/11 (Figure 14). 44

7 Diagnostic characteristics: TL: cm, D: III 8, A: III 6-7, P: I 11-15, V: II 9. Lateral line scales: (Figure 16). Figure 13. Rutilus rutilus (Linnaeus, 1758) Figure 15. Capoeta erhani Turan, Kottelat & Ekmekçi, 2008 Figure 14. Capoeta angorae (Hankó, 1925) Capoeta erhani Turan, Kottelat & Ekmekçi, 2008 Material examined: 15 January 2005, 5 specimens. Diagnostic characteristics: TL: cm, D: II-III 8-9, A: III 5, P: I 14-17, V: I 7-8, C: 22-26, Lateral line scales: 67, Transversal scales: 12/ 9, gill rakers: 26-27, pharyngeal teeth: (Figure 15). Tinca tinca (Linnaeus, 1758) Material examined: 17 March 2004, 9 specimens; 18 April 2004, 12 specimens; 15 May 2004, 7 specimens; 15 June 2004, 3 specimens; 17 July 2004, 1 specimens;14 August 2004, 2 specimens; 10 Semptember 2004, 3 specimens; 15 October 2004, 1 specimens; 19 November 2004, 1 specimens; 16 December 2004, 1 specimens; 15 January 2005, 4 specimens; 17 February 2005, 5 specimens; 18 March 2005, 3 specimens. Figure 16. Tinca tinca (Linnaeus, 1758) Cobitis evreni Erk'akan, Özeren & Nalbant, 2008 Material examined: 10 September 2004, 3 specimens. Diagnostic characteristics: TL: cm, D: II 7, A: II 6, P: I 7-8, V: I 4-5, C: 16, Large brown spots along the lateral line (Figure 17). Family: Siluridae Silurus glanis Linnaeus, 1758 Material examined: 17 July 2004, 10 specimens. Diagnostic characteristics: TL: cm, D: I 2, A: I 93, P: I 13, V: I 10, C 15. (Figure 18). 45

8 Family: Cyprinidontidae Aphanius fasciatus (Valenciennes, 1821) Material examined: 17 July 2004, 53 specimens. Diagnostic characteristics: TL: cm, D: II 8-11, A: II 7-11, P: I 13 14, V: I 5 6. Lateral line scales: (Figure 20). Figure 17. Cobitis evreni Erk'akan, Özeren & Nalbant, 2008 Figure 18. Silurus glanis Linnaeus, 1758 Figure 20. Aphanius fasciatus (Valenciennes, 1821) Aphanius mento (Heckel, 1843) Material examined: 17 July 2004, 2 specimens. Diagnostic characteristics: TL: cm, D: II 13, A: I 8-9, P: I (Figure 21) Family: Clariidae Clarias gariepinus (Burchell, 1822) Material examined: 15 June 2004, 2 specimens. Diagnostic characteristics: TL: cm, D: 82, A: 45, P: II, V: I 6, C: 15 (Figure 19). Figure 21. Aphanius mento (Heckel, 1843) Figure 19. Clarias gariepinus (Burchell, 1822) Family: Poecilidae Gambusia affinis (Baird & Girard, 1853) Material examined: 17 July 2004, 350 specimens. Diagnostic characteristics: D: I 5, A: I 5, P: 11 12, V: 4. Male 3 4 cm, TL, Female 4 5 cm, TL, Lateral line scales: (Figure 22). 46

9 Family: Percidae Sander lucioperca (Linnaeus, 1758) Material examined: 17 March 2004, 1 specimens; 15 October 2004, 5 specimens; 17 February 2005, 2 specimens; 18 March 2005, 2 specimens. Diagnostic characteristics: TL: cm, D1: XIII-XV, D2: II-III 19-24, A: III 11-13, V: I 4 5, P: 15-17, Lateral line scales: 80 93, Transversal scales: 13-16/16-24 (Figure 23). Figure 22. Gambusia affinis (Baird & Girard, 1853) Figure 23. Sander lucioperca (Linnaeus, 1758) Family: Blennidae Salaria fluviatilis (Asso, 1801) Material examined: 18 March 2005, 2 specimens. Diagnostic characteristics: TL: cm, D XII-XIII, A 18-20, P 12-13, V: 4 (Figure 24). Figure 24. Salaria fluviatilis (Asso, 1801) In the present study, a total of 23 species were determined from the Seyhan Dam Lake. However, only 20 fish species were reported by Sarihan and Toral (1973) for Seyhan Dam Lake in the Of those only 8 fish species (C. carpio, L. cephalus, G. rufa obtusata, S. lucioperca, B. Fluviatilis, S. glanis, C. gariepinus (lazera), Aphanius sp.) were the same to our study. In another study, DSI (1985) reported 14 species, namely european eel (A. anguilla), bleak (A. alburnus), danube bleak (C. chalcoides), carp (C. carpio), common bream (A. brama), mediterranean barbel (B. meridionalis), barbel (B. barbus), common nase (C. nasus), european chub (L. cephalus), Siraz (C. pestai), angora loach (N. angorae), spined loach (C. teania), wels catfish (S. glanis), pike-perch (S. lucioperca) in the same lake. When early studies related to fish populations in Seyhan Dam Lake is considered, ıt seems to have an important variation in fish fauna species. Some of the significant reasons for this variation are thought to be ecological changes. Another reason for this, many fish species were introduced by local fishermans to Seyhan Dam Lake without permission. Onchorhynchus mykiss is widely breed not only in pool and cage freshwaters but also in marine water cages. In addition to being commercially cultured, rainbow trout (O. mykiss) also an invasive species, which is listed by IUCN (International Union for Conservation of Nature, IUCN) among the fastest invading 100 species across the world (Kitano, 2004). Although this species was first introduced to Seyhan Dam Lake so as to be breed in loating pools during winter months, it is considered to have escaped from cage during transport (Erguden Alagoz et al., 2010a). 47

10 S. lucioperca was first time inoculated into the Seyhan Dam Lake in by DSI (1984). There after, DSI (1985) study was inoculated about young common carps into the dam lake in 1976 to Common carp is stocked into natural waters, reservoirs, and temporarily inundated areas, in order to utilize the natural food production of these waters for enhanced capture fisheries and this is also done by DSI in Turkey. C. carassius was reported in lakes and river system in Turkey (Balik, 1984, Geldiay and Balik, 2007). C. carassius was first time determined in the Seyhan Dam Lake by the present study. Diagnostic characteristics of C. carassius individuals were similar to individuals in Orontes River (Yalcin et al., 2001). C. gibelio is an invasive species. C. gibelio were found in Terme-Samsun Simenit Lake (Helli (Ugurlu) and Polat, 2003) and İstanbul Büyük Çekmece Dam Lake (Ozulug, 1999). This species is distinguished from C. carassius in Europe by a golden-brown, silvery body colour the last simple anal and dorsal rays are strongly serrated. C. gibelio was first recorded by the present study in the Seyhan Dam Lake. Up to date, two species of Acanthobrama (Acanthobrama mirabilis and Acanthobrama marmid) were reported in Turkish freshwaters by Geldiay and Balik (1996). In the present study, seven specimens of Acanthobrama were determined in Seyhan Dam Lake. Acanthobrama sp. was also reported in Ceyhan River (Kara et al., 2010). According to Kara et al. (2010) this species was different from A. mirabilis and A. marmid. The diagnostic characteristics of Acanthobrama sp. generally defined in our study were similar to A. marmid, however, number of dorsal spin was different from A. marmid. Alburnus is distributed in a large part of Syria, Iran, Caucasia, Europe and Anatolia (Armantrout, 1969, Banarescu, 1977, Bogutskaya, 1990, Geldiay and Balik 1996). In our study, two specimens of Alburnus were determined in Seyhan Dam Lake and this species was different from Alburnus species. Diagnostic characteristis of Alburnus sp. determined in the present study are not consistent with the previous studies (Balik and Alp, 1994, Geldiay and Balik, 1996, Kara et al. 2010). This species is probable a new species for Seyhan River system. European Chub (S. cephalus) belong to the family Cyprinidae, which contains numerous species of fish present in Turkey (Geldiay and Balik 1996). Diagnostic charasteristics of S. cephalus were similar features reported by Geldiay and Balik (1996). S. kottelati was described from the Orontes, Ceyhan and Seyhan River systems as a new species by Turan et al. (2009). S. kottelati was found in Menzelet, Sır Dam Lakes, and in Ceyhan River (Kara et al., 2010). In the present study, S. kottelati was found the first time for Seyhan Dam Lake. Diagnostic charasteristics of S. kottelati were similar to the features reported by Turan et al. (2009). G. rufa was previous reported in Seyhan River system (Ladiges, 1960, Balik, 1988), Tigris-Euphrates system (Bianco and Banarescu, 1982), According to Geldiay and Balik (1996), G. rufa inhabited in Antakya, South East Anatolia district, Seyhan and Ceyhan River system. In our study, G. rufa was determined in the Seyhan Dam Lake. Diagnostic charasteristics of G. rufa were similar to that of stated by Kara et al. (2010). C. regium is distributed in Asi, Tigris, Euphrates, Göksu, Seyhan and (Erguden Alagoz et al., 2010b). Ceyhan River systems (Geldiay and Balik, 1996). Our diagnostic features concurs with features for C. regium and were similar to those of Ekingen and Sarieyyüboğlu (1981), Erdemli and Kalkan (1996), Geldiay and Balik (1996), and Kara et al. (2010). DSI (1971) and Sarihan and Toral (1973) were reported that three Barbus species (B. barbus, B. Meridionalis, B. mystaceus) for Seyhan Dam Lake. However, in these studies B. rajonarum has not been reported in the Seyhan Dam Lake. Recently, this species was described as L. pectoralis by Turan et al. (2008). Diagnostic features of B. rajanorum were similar to those of Geldiay and Balik (1996) and Kara et al. (2010). R. rutilus is commonly distributed Manyas, Sapanca, Apolyont, İznik, Büyükçekmece Lake, Meriç River and Seyhan Reservoir in freshwater of Turkey (Geldiay and Balik, 1996, Erguden Alagoz et al., 2008a). According to Ozyurt and Avsar (2005), R. rutilus was caught annual average as 8% from the Seyhan Dam Lake. Our samples were in compliance with the meristic char- 48

11 acteristics given by Geldiay and Balik (1996) and Bogutskaya (1997) for R. rutilus. In recent years, C. capoeta angorae has been described as C. angorae by Turan et al. (2006). Diagnostic features of C. angorae in Seyhan Dam Lake were similar to those stated by Geldiay and Balik (1996) and Kara et al. (2010). C. erhani was first time reported from Ceyhan River and described as a new species by Turan et al. (2008). Biological characteristics and conservation status are not known. This species also was the first time found in this study for Seyhan Dam Lake. To date, 10 Cobitidae species and 1 subgenus were described in Turkish freshwaters (Erk akan et al., 1999, Kara et al., 2010). However, C. evreni in Ceyhan River was recognised by Erk akan et al. (2008). In our study, this species was first time reported for Seyhan Dam Lake. Diagnostic charasteristics of C. evreni were similar to features reported by Kara et al. (2010) and Erk akan et al. (2008). T. tinca is widespread in Europe, and is also found in the anterior orient and western Siberia (Demirsoy, 1988). In Turkey, it is reported in rivers flowing into the Black Sea from Thrace and northern Anatolia (Kuru, 1996). The tench is introduced to some lake and dam lake from It is increasingly evident that T. tinca widespread in Turkey inlandwater (Karabatak, 1994). This species is introduced without permission and is rapidly widespread because of feeding competition to carp in Seyhan Dam Lake (Erguden et al., 2007, Erguden and Goksu, 2010). S. glanis has a wide distribution that includes the Sakarya, Manyas, Apolyont, İznik, Gölhisar, Samsun, Kura, Aras, Seyhan and Ceyhan Rivers (Kuru, 1975, Geldiay and Balik, 1996, Alp et al., 2004). In our study, ten S. glanis was obtained from Seyhan Dam Lake. C. gariepinus was reported in lakes and rivers in Mediterranean coast (Spataru et al., 1987, Yalcin et al., 2001, Kucuk and Ikiz, 2004). Diagnostic characteristics of C. gariepinus individuals were similar to those individuals in Orontes river Yalcin et al. (2001) and Ceyhan River basin (Kara et al., 2010). A. mento and A. faciatus were determined in Seyhan Dam Lake. They were mostly found in lakes. Diagnostic charasteristics of A. mento were similar to the features reported by Kara et al. (2010). Although, Sarihan and Toral (1973) reported that systematically only the genus base of Aphanius. In our study, A. mento and A. faciatus was the first time identified for Seyhan Dam Lake. G. affinis is an exotic species. It was firstly introduced by French for mosquito control in Turkey in 1912 and was introduced into Amik and Gavur Lakes (Geldiay and Balik, 1996, Erguden Alagoz and Erguden, 2008b). In our study, very intensive populations of G. affinis were observed in the dam lake. S. fluviatilis inhabits in streams and lakes which flowing into the Mediterranean Sea (Changeux and Pont, 1995, Cote et al., 1999, Neat et al., 2003). It was reported that in Turkey, they are to state in rivers and Iznik Lake which near coast Mediterranean and Aegean coasts (Geldiay and Balik, 1996). This species has been reported for Seyhan Dam Lake by Sarihan and Toral (1973). Conclusion Consequently, very few reports have been given on the fish fauna of the Seyhan Dam Lake. In our study a total of 12 new fish species and 1 genus of 4 families, one species (O. mykiss) belonging to Salmonidae, 8 species and 1 genus C. carassius, C. gibelio, Acanthobrama sp., Alburnus sp., S. kottelati, L. pectoralis, C. angorae, C. erhani, belonging to Cyprinidae, one species (C. evreni) belonging to Cobitidae, two species (A. fasciatus and A. mento belonging to Cyprinodontidae were first time described from the Seyhan Dam Lake. Acknowledgements This study was supported by Research Fund of the Cukurova University (BAPB), project number SUF.2004.YL5. We would you like to thank due to help for Dr. Davut Turan rediagnosing the fish samples References Alagoz, S., (2005). Determination of Ichthyofauna in the Seyhan Dam Lake (Adana). MSc thesis. Adana: Cukurova University, Institute of Natural and Applied Science, p. 82. [In Turkish]. Alagoz, S., Goksu, M.Z.L., Erguden, D., (2006). A Premiliminary research on size distribution and condition factor determination of roach (Rutilus rutilus L.,1758) Population in 49

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